Stadium chair



FIG. 1 is a perspective view of a stadium chair showing a top, front, and right side of my new design;

FIG. 2 is a perspective view of the stadium chair showing a bottom, front, and left side of my new design;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof; a left side view is not shown but is a mirror image of the right side view and also shows a carrying strap, which can also be seen by the other views;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof. 

CLAIM The ornamental design for a stadium chair, as shown and described. 